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Monday, August 18 • 4:00pm - 4:30pm
Scaling Xen's Aggregate Storage Performance - Felipe Franciosi, Citrix

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Storage systems continue to deliver better performance year after year. High performance solutions are now available off-the-shelf, allowing users to boost their servers with drives capable of achieving several GB/s worth of throughput per host. To fully utilise such devices, workloads with large queue depths are often necessary. In virtual environments, this translates into aggregate workloads coming from multiple virtual machines.
Having previously addressed the impact of low latency devices in virtualised platforms, we are now aiming at optimising aggregate workloads. We will discuss the existing memory grant technologies available in Xen and compare trade-offs and performance implications of each: grant mapping, persistent grants and grant copy. For the first time, we will present grant copy as an alternative and show measurements over 7 GB/s, maxing out a set of local SSDs.

Speakers
avatar for Felipe Franciosi

Felipe Franciosi

Software Performance Engineer, Citrix
I have been a Software Performance Engineer working for Citrix since October 2011, specifically on XenServer Storage Virtualisation. Previously, I finished a PhD at Imperial College London on performance of virtualised storage. | | My experience with Xen dates back to 2006 during my MSc, when I wrote a framework for deploying Xen hosts and VMs over multicast. Xen Site Manager (XSM, presented at Euro-Par 2007) also supported VM migration... Read More →


Monday August 18, 2014 4:00pm - 4:30pm
Erie

Attendees (9)